Light travels a certain distance in water in `3 mu` s . How much time it would take for light for travel the same distance in air ? Refractive index of water = 4/3.

The time taken by a monochromatic light to travel a certain distance in air in 9 xx 10^(-6) seconds. The time taken by the light ray to travel the same distance in water of refractive index (4)/(3) is

The time taken by a monochromatic light to travel a certain distance in air in 9 xx 10^(-6) seconds. The time taken by the light ray to travel the same distance in water of refractive index (4)/(3) is

Calculate the time taken by light to travel a distance of 10 km in water of refractive index 4//3 .

A boat takes 4 hrs to travel certain distance in a river in down stream and it takes 6 hrs to travel the same distance in upstream. Then the time taken by the boat to travel the same distance in still water is

A boat takes 4 hrs to travel certain distance in a river in down stream and it takes 6 hrs to travel the same distance in upstream. Then the time taken by the boat to travel the same distance in still water is